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70-Mile-Long Crack Opens Up in Antarctica
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<blockquote data-quote="Num7" data-source="post: 146843" data-attributes="member: 1"><p>An ominous crack in an Antarctic ice shelf as wide as a football field is long takes on an otherworldly beauty in a new aerial image.</p><p></p><p><img src="http://www.livescience.com/images/i/000/088/072/original/antarctica-rift-larsen-c.jpg?interpolation=lanczos-none&fit=inside|660:*" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Snapped by scientists on NASA's IceBridge mission, the shot shows a rift in Larsen C, an ice shelf that is floating off the Antarctic Peninsula. When the crack eventually spreads across the entire ice shelf, it will create an iceberg the size of the state of Delaware, according to IceBridge. That's around 2,491 square miles (6,451 square kilometers).</p><p></p><p>As of Nov. 10, when the IceBridge scientists observed this crack, it was 70 miles (112 km) long and more than 300 feet (91 meters) wide. The dark depths of the crack plunge down about a third of a mile (0.5 km), all the way through the ice to the ocean below. [See More Gorgeous Antarctic Images from IceBridge] </p><p></p><p>According to NASA Ice, an Earth sciences program at NASA, this rift is relatively new — it showed growth on satellite imagery just this year. The U.K.-based Antarctic research group the MIDAS Project first observed the rift in 2014 and has been tracking it ever since. </p><p></p><p>Larsen C is Antarctica's fourth-largest ice shelf, and it holds back the land-based glaciers just behind it: Once the ice shelf goes, those slow-flowing glaciers have one less barrier in their journey toward the sea. In 2002, the nearby ice shelf Larsen B partially collapsed after showing similar rifting, NASA's Earth Observatory reported earlier this year, when it showed the collapse alongside a satellite image of the growing Larsen C crevasse.</p><p></p><p>According to the MIDAS Project, the eventual calving of the Delaware-size sheet of ice would remove between 9 percent and 12 percent of Larsen C's surface area and may lead to the crumbling of the entire ice shelf.</p><p></p><p>Source: </p><p><a href="http://www.livescience.com/57109-antarctic-ice-rift-is-70-miles-long.html" target="_blank">70-Mile-Long Crack Opens Up in Anatarctica</a></p></blockquote><p></p>
[QUOTE="Num7, post: 146843, member: 1"] An ominous crack in an Antarctic ice shelf as wide as a football field is long takes on an otherworldly beauty in a new aerial image. [IMG]http://www.livescience.com/images/i/000/088/072/original/antarctica-rift-larsen-c.jpg?interpolation=lanczos-none&fit=inside|660:*[/IMG] Snapped by scientists on NASA's IceBridge mission, the shot shows a rift in Larsen C, an ice shelf that is floating off the Antarctic Peninsula. When the crack eventually spreads across the entire ice shelf, it will create an iceberg the size of the state of Delaware, according to IceBridge. That's around 2,491 square miles (6,451 square kilometers). As of Nov. 10, when the IceBridge scientists observed this crack, it was 70 miles (112 km) long and more than 300 feet (91 meters) wide. The dark depths of the crack plunge down about a third of a mile (0.5 km), all the way through the ice to the ocean below. [See More Gorgeous Antarctic Images from IceBridge] According to NASA Ice, an Earth sciences program at NASA, this rift is relatively new — it showed growth on satellite imagery just this year. The U.K.-based Antarctic research group the MIDAS Project first observed the rift in 2014 and has been tracking it ever since. Larsen C is Antarctica's fourth-largest ice shelf, and it holds back the land-based glaciers just behind it: Once the ice shelf goes, those slow-flowing glaciers have one less barrier in their journey toward the sea. In 2002, the nearby ice shelf Larsen B partially collapsed after showing similar rifting, NASA's Earth Observatory reported earlier this year, when it showed the collapse alongside a satellite image of the growing Larsen C crevasse. According to the MIDAS Project, the eventual calving of the Delaware-size sheet of ice would remove between 9 percent and 12 percent of Larsen C's surface area and may lead to the crumbling of the entire ice shelf. Source: [URL="http://www.livescience.com/57109-antarctic-ice-rift-is-70-miles-long.html"]70-Mile-Long Crack Opens Up in Anatarctica[/URL] [/QUOTE]
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